Triggers

Stockful provides 10 triggers that fire when inventory events occur. Every trigger includes a Product reference (the Shopify product resource, giving you access to all product fields in Flow) along with event-specific data.

Low stock detected

Fires when inventory falls below the low-stock threshold at a location.

Field	Type	Description
Product	Product reference	The product with low stock
Location	Text	The location where stock is low
Available	Number	Current available quantity
Threshold	Number	The low-stock threshold that was breached
Velocity	Number	Sales velocity in units per day
Days of supply	Number	Estimated days of stock remaining
Reorder point	Number	Calculated reorder point
Reorder quantity	Number	Suggested reorder quantity
Variant ID	Number	The numeric variant ID
SKU	Text	Variant SKU
Variant title	Text	Variant title

When it fires: Real-time, within seconds of an inventory change that crosses the threshold.

This trigger includes reorder point and reorder quantity, so you can go straight to creating a purchase order or supplier notification without querying forecast data separately.

Out of stock

Fires when a variant goes out of stock at a specific location.

Field	Type	Description
Product	Product reference	The product that is out of stock
Location	Text	The location where stock ran out
Velocity	Number	Sales velocity before stockout (units/day)
Reorder quantity	Number	Suggested reorder quantity
Stock status	Text	Current stock status
Variant ID	Number	The numeric variant ID
SKU	Text	Variant SKU
Variant title	Text	Variant title

When it fires: Real-time, when available quantity drops to zero.

Back in stock

Fires when a variant that was out of stock (zero available) returns to a positive quantity at a location. It does not fire when stock increases from an already-positive level.

Field	Type	Description
Product	Product reference	The product that was restocked
Location	Text	The location where stock was received
Available	Number	New available quantity
Restock amount	Number	Quantity added in this restock
Variant ID	Number	The numeric variant ID
SKU	Text	Variant SKU
Variant title	Text	Variant title

When it fires: Real-time, when a variant transitions from zero to positive stock.

Pair this with the “Out of stock” trigger to build back-in-stock notification workflows - tag products when they go out, remove the tag and notify customers when they’re restocked.

Reorder point reached

Fires when inventory falls below the calculated reorder point at a location.

Field	Type	Description
Product	Product reference	The product that needs reordering
Location	Text	The location where reorder is needed
Available	Number	Current available quantity
Reorder point	Number	The reorder point that was breached
Reorder quantity	Number	Suggested reorder quantity
Velocity	Number	Sales velocity in units per day
Days of supply	Number	Estimated days of stock remaining
Variant ID	Number	The numeric variant ID
SKU	Text	Variant SKU
Variant title	Text	Variant title

When it fires: Real-time, when available quantity drops below the reorder point.